This is a complete combustion motor and housing assembly

There is no functional or technical difference between these two model numbers

This construction provides the necessary lateral rigidity and flexibility to handle frequent start-stop cycles without excessive elongation

Optimized Compatibility: Verified for use with 1–3 ton Source 1 and York systems

the system continuously monitors duct pressure

Laars Heating Systems R2076600 Pressure Switch 328140-751 This is a complete combustionThe Laars Heating Systems R2076600 Pressure Switch is a critical safety and operational component designed for high efficiency hydronic systems, specifically the Laars Pennant and Mighty Therm II series. Calibrated at 1. 05" WC (Water Column), this PR V pressure switch serves as a blower proving mechanism, ensuring that the combustion fan is generating sufficient airflow before the ignition sequence initiates. For contractors servicing commercial